Tire-bolt wrench



No. 623,793. Patented Apr. z5, |899. w. umso".

TIRE BOLT WRENCH.

(Application led Oct. 22, 189B.)

(No Modal.)

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Nakms Farias co., PHoTouTno.. wsmNuToN, u. c.

llnrrnn l/VALFRID LARSON, OF KINGSBURG, CALIFORNIA.

TIRE-BOLT WRENCH.

SPECIFICATION forming part of Letters Patent No. 623,793, dated April2'5, 1899.

Application filed October 22, 1898. Serial No. 694,296. (No model.)

To @ZZ whom, it may concern.-

Beit known that I, WALFRID LARsoN, of Kingsburg, in the coun ty ofFresno and State of California, have invented a new and ImprovedTire-Bolt Vrench, of which the following is a full, clear, and exactdescription.

My invention relates to an improvement in devices to be used fortightening and loosening nuts upon bolts, and particularly nuts upontire-bolts.

Theinvention consists of the novel features of construction andcombinations of parts, as hereinafter described, and pointed out in theappended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the iigures.

Figure l is a plan and partial section of the wrench. Fig. 2is a view ofthe same at right angles to that shown in Fig. 1, and Fig. 3 is a detailView of a spring employed in connection with the wrench.

My device is intended for use in connection with such work as thetightening and removing of tire-bolts where one end of the bolt may beengaged by one jaw of a pair of tongs to prevent the nut from rotatingand the nut at the opposite end may be engaged by a wrench which may berotated, so as to loosen or tighten the nut.

The device is mounted upon two levers A and B, which are pivoted to eachother, so as to form a pair of tongs. One of these levers A has a singlejaw A', through the outer end of which is threaded a bolt H, the saidbolt being provided at one end with a thumb-piece or attened wing bywhich it may be turned and at the other end with a iiattened point 7L,similar to the end of a screw-driver, by which the end of the bolt maybe engaged to prevent its turning. The jaw A', as well as thecomplementary jaws upon the lever B, is made of such a size as toembrace the rim of the -wheel and permit of the bolt H engaging with thetire-bolt. The lever B has jaws which are formed in two parts B' and B2,separated from each other and having a recess l), within which aremounted two`intermeshing pinions D and D'. The pinion D is secured upona shaft E, which passes through both jaws B and Bgand also through aslot ain the jaw A', the slot being designed to accommodate the shaft asthelevers are swung upon their pivot. This shaft is provided With acrank F, so that it may be rotated, said crank having a bend F', bywhich it may conveniently pass the bolt H, and a handle I, the handlebeing secured by means of a nut I' upon its inner end, the bolt of thehandle I passingthrough a slot f in the outer end of the crank. By thismeans the position of the handle I may be adjusted.

The pinion D is mounted upon a tube G by means of a keyway and a featherd, so

"that the tube may slide in but must rotate with the pinion. The ke'ywayor slot stops short of the outer'end of the tube G, thus forming a stopwhich engages the outer end of the key or feather CZ, so as to preventthe two being forced too far inward or from accidentally falling out ofthe pinion. The inner end of the tube G is provided with a beveled outersurface G', which may be forced into the Wheel-rim, if necessary. Thisend of the tube may be provided with flat surfaces corresponding innumber with the sides of the A nut which the tube is to fit, and theposition of the nut may then be told at any time. The central bore G2 ofthe tube is shaped to correspond with the shape of the nut to beoperated upon and is slightly tapered, the smaller end being that whichis used as a wrench. The tube is free to turn in the jaws B' and B2 andserves as a shaft for the pinion D'. The opposite or outer end of thetube G is reduced in size, as shown at G3, to receive the end of aspring C. This spring is formed as a flat bar and is secured at one endto the jaw B2 by means of a clamping-screw C' and has its opposite endformed as a ring O2, adapted to surround the reduced portion G3 ofthetube G and to engage the shoulder at the inner end of said reducedportion'. The spring is slightly bent, as clearly shown in Fig. l, sothat the tension-thereof may be readily adjusted by turning the bolt C',which for convenience is provided witha flat head or thumb-piece.

Upon the jaw B2 is secured a receptacle J, adapted to receive the nutafter it has been removed from the bolt. This receptacle is IOO securedto the jaw B2 by means of a screw J, which passes through a slot in oneside of the receptacle and secures the latter in place, and thereceptacle is provided with a notch to receive the reduced portion G3 ofthe tube G. passes through the tube G and drops into the receptacle J.

In using my device the jaws are made to embrace the rim of the wheel,and the bolt H is screwed down upon the head of t-he bolt, the cud ofthe socket-tube G being previously passed over the nut. Ou tighteningthe bolt ll the pressure comes upon the jaw B and not upon the tube G.By reason of this the pressure upon the bolt may be made greater thanwould be possible if the end of the tube G were relied upon forsustaining the back pressure. 'lhe tube G is held upon the nut by meansof the spring C. lly reason of this construction the tube G is notforced into the wood more than is necessary to securely hold the nut,and marring of the wheel-rim is thus avoided.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. A tire-bolt wrench, comprising two pivoted leversforming a pair of tongs, a sockettnbe mounted to turn and slide in onejaw,

means for turning the socket-tube, a flat spring secured to the outerside of the jaw and engaging the end of the socket-tube to hold it uponthe nut, and an adjusting-bolt passing through the spring by which itstension may be adj usted.

A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, a sockettube mounted to turn and slide in one jaw a springengaging said tube to hold it in engagement with the nut, atension-adjusting screw for the spring, means for turning thesocket-tube, an adjustable device carried by the other jaw of the tongsand engaging the bolt-head to hold it against rotation, and a cup orreceptacle having its upper end placed to receive the nut from the rearend of the tube.

3. A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, a sockettube mounted to turn and slide in one jaw, a pinionhaving rotative connection with the socket-tube, an intermeshing pinionhaving a crank connected therewith, a dat spring secured lengthwise theouter side .of the jaw and engaging the socket-tube, to hold it upon thenut and a bolt passing through the spring and into the jaw whereby thetension of the spring may be readily adjusted.

-L A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, one jaw having a pinion-receiving recess, two intermeshingpinions within said recess, a crank and shaft connected with onepinion,a sockettube forming the shaft of the other pinion and connectedto rotate with the pinion and to slide in the jaw and pinion, a springengaging the rear end of the socket-tube and a The nut when removed fromthe bolt.

thumb-nut for adjusting the tension of said spring.

5. A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, the jaw end of one lever having gears journaled therein, and oneof the gears carrying a socketwren eh, the other gear having a shaftextending through the opposite jaw, a crank upon this shaft outside ofthe last jaw, said jaw having a slot or hole loosely accommodating theshaft and also having a bolt-head-engaging member, substantially asdescribed.

t5. A tire-bolt wrench, comprising two piv-.

oted levers forming a pair of tongs, the jaw end of one lever havinggears journaled therein and one of the gears carrying a socketwrench,the other gear having a shaft extending through the opposite jaw, acrank upon this shaft outside of the last jaw, said jaw having a slot orhole loosely accommodating the shaft and also having a threaded boltpassing through its end and adapted toengage the bolt-head,substantiallyas described.

7. A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, the jaw end of one lever having gears journaled therein, and oneof the gears having a hollow shaft keyed to turn with the gear andslidable lengthwise therein, said shaft forming a nuten gaging socket,the othergear having a shaft extending through the opposite jaw, a crankupon this shaft outside of the last jaw, said last jaw having a slot orhole loosely accommodating the shaft, and also having abolthead-engaging member, substantially as described.

8. A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, the jaw end of one lever having gears journaled therein, and oneof the gears having a hollow shaft keyed to turn with the gear andslidable lengthwise therein, said shaft forming a nutengaging socket, aspring engaging the socketshaft to yieldingly hold it inward, the othergear having a shaft extending through the opposite jaw, a crank uponthis shaft outside of the last jaw, said last jaw having a slot or holeloosely accommodating the shaft and also having a bolt-head-engagingmember, substantially as described.

0. A tire-bolt wrench, comprising two pivoted levers forming a pair oftongs, twopiuions journaled in one jaw of the tongs, means for turningthe pinions, one pinion having a hollow shaft forming a nut-engagingsocket and provided with a key-and-feather connection with this pinion,the key-receiving slot in the shaft stopping short of its outer end andthus forming a stop to prevent the shaft from passing through the pinionin one direction, and a spring engaging the outer end of the shaft tohold it inward, substantially as described.

VALFRID LARSON.

Vitnesses:

JOHN I. CLARK, L. B. HAYHURST.

IDO

